Mammaliaformes Rowe 1988
Count: [g†g] 1c;24o;125f;1081g; ‡1o;6f;43g; †24o;301f;4057g;1s
[crown] Class Mammalia Linnaeus, 1758 - mammals
Count: [g†g] 24o;125f;1081g; ‡1o;6f;43g; †21o;294f;4034g;1s
Subclass Theriiformes Rowe, 1988
see Division Theriiformes Rowe, 1988
Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †21o;294f;4031g;1s
Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995
see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †20o;277f;3936g;1s
Superlegion Trechnotheria McKenna, 1975
see Clade Trechnotheria McKenna 1975
Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †20o;274f;3932g
Legion Cladotheria McKenna, 1975
see Clade Cladotheria McKenna 1975
Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †18o;269f;3910g
Sublegion Zatheria McKenna, 1975
see Clade Zatheria McKenna 1975
Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †16o;262f;3884g
Infralegion Tribosphenida McKenna, 1975
see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †16o;258f;3877g
[crown] Supercohort Theria Parker & Haswell, 1897 - therians
see Subclass Theria Parker & Haswell, 1897
Count: [g†g] 22o;123f;1078g; ‡1o;6f;43g; †16o;256f;3874g
Cohort Marsupialia Jameson, 1818 - marsupials
Count: [g†g] 5o;15f;73g; ‡1f;3g; †2o;28f;237g
Magnorder Ameridelphia Szalay, 1982
see Clade Ameridelphia Szalay 1982
Count: [g†g] 2o;2f;17g; †1o;16f;129g
Order Didelphimorphia Gill, 1872
Count: [g†g] 1f;14g; †1f;42g
Family Didelphidae Gray, 1821 - American opossums
Count: [g†g] 14g; †38g
Subfamily Didelphinae Gray, 1821
Count: [g†g] 11g; †11g
Tribe Monodelphini Talice, de Mosera & Machado, 1960
Count: [g†g] 6g; †2g
Subtribe †Zygolestina Marshall, 1987
Count: [†g] †1g
Genus †Zygolestes Ameghino, 1898
Count: -